How to Change the Oil in a 2016 Husqvarna TC85BW: A Step–by–Step Guide

Shop parts for a 2016 Husqvarna TC85BW Dirt Bike.

An oil change is a vital maintenance task for keeping your 2016 Husqvarna TC85BW dirt bike running at peak performance. Below you’ll find a detailed, MotoSport.com proprietary guide outlining the tools, supplies, and exact steps you need, along with notes specific to the 2016 TC85BW model.

Tools and Supplies Needed

  • 13mm socket or wrench (for drain bolt)
  • Allen wrench or suitable tool for oil fill plug (check your owner’s manual for size)
  • Drain pan or oil catch tray
  • Funnel for refilling
  • 500cc (0.5L) of high-quality transmission/gear oil (consult your owner’s manual for Husqvarna’s recommended type, but standard 80W/85W gear oil is a typical choice)
  • Clean shop towels or rags
  • Parts cleaner or degreaser (optional, for cleaning drain plug and area around it)
  • Replacement O-ring for drain bolt (optional but recommended every few changes)
  • Gloves and safety glasses (optional, for personal protection)

Steps to Change the Oil in a 2016 Husqvarna TC85BW

  • 1. Prep Your Bike and Work Area
    • Place the bike on a secure stand — an upright, level position ensures complete draining and accurate oil fill.
    • Run the engine for 2-3 minutes to warm the oil slightly; this allows it to flow out more completely.
    • Turn off the bike and let it cool for a minute so parts are warm but not hot. Remove the key and ensure the bike is stable.
  • 2. Clean Around the Drain and Fill Plug
    • Use a shop towel to wipe any dirt or debris near the drain bolt and oil fill plug. This prevents contaminants from getting inside your transmission.
  • 3. Remove the Oil Fill Plug
    • Unscrew the oil fill plug. This allows air into the case, helping the oil drain completely. Set the plug aside in a clean place.
  • 4. Drain the Old Oil
    • Place your drain pan beneath the drain bolt on the left side of the engine, just behind the shifter lever.
    • Use a 13mm socket to loosen and remove the drain bolt. Be careful as oil may drain quickly.
    • Allow all old oil to fully drain. You may need to gently tip the bike upright or rock it side to side to ensure complete drainage.
    • Inspect the drain bolt. Clean it with a towel and replace the O-ring if worn or flattened.
  • 5. Reinstall the Drain Bolt
    • Once oil is fully drained, reinstall and tighten the drain bolt securely, but do not overtighten. Damaged threads or stripped bolts can cause oil leaks.
  • 6. Add New Gear Oil
    • Using a funnel, add 500cc (0.5L) of recommended oil through the oil fill opening.
    • Clean any spilled oil immediately and double-check your measurement — overfilling or underfilling can harm the clutch and transmission.
  • 7. Check Oil Level
    • With the bike perfectly upright, double-check for leaks at the drain bolt.
    • Some models have a sight glass or check bolt. If so, remove the level bolt to verify excess oil drains out; reinstall the bolt when a trickle appears. If not, use your 500cc measurement.
  • 8. Reinstall the Oil Fill Plug & Test
    • Tighten the oil fill plug and wipe down any excess oil from the engine case.
    • Start the bike and idle it for a minute, then shut off and inspect for leaks around the drain and fill plug.
  • 9. Dispose of Old Oil Properly
    • Pour old oil into a sealable container and recycle it at a local service station or recycling center. Never pour oil down a drain or onto the ground.

Model-Specific Call-Outs for the 2016 Husqvarna TC85BW

  • Oil Capacity: The Husqvarna TC85BW and its KTM/GasGas equivalents require exactly 500cc (0.5L) of gear oil. Do not exceed this amount, as overfilling can increase internal pressure and lead to leaks or clutch issues.
    Source: "Our GASGAS MC 85 holds 500cc of Gear Oil. ... GasGas MC 85 or KTM 85 SX & Husqvarna TC 85."
  • Drain Plug Location: On the TC85BW, the drain bolt is on the left side, just behind the shift lever.
    Source: "Your drain is on the left side of the bike right behind the shifter ... it is a 13 millimeter socket."
  • O-Ring: It’s good practice to inspect or replace the O-ring on the drain bolt during every oil change to prevent leaks. Universal O-ring kits can help.
    Source: "You can also replace this O-ring right here ... I changed that every once in a while just to make sure it’s sealed."
  • Oil Type: Use oil specifically formulated for 2-stroke gear cases; typical recommendations are 80W/85W gear oil. Do not use regular engine oil.
  • No Oil Filter: The TC85BW’s engine does not feature an internal filter that must be changed; routine oil changes are the main regular procedure for transmission lubrication.
  • Tip: Cleanliness is paramount. Always wipe around drain and fill points before opening to keep dirt out of your engine and transmission.

Final Reminders

  • Change your oil frequently, especially after heavy riding, muddy conditions, or deep water crossings. Refer to your owner’s manual for recommended intervals.
  • Always use the best oil you can afford. High-quality gear oil provides better clutch and gear protection.
  • Check for leaks after every oil change and before every ride to ensure reliability.
  • Record your oil change date and hours on the bike to help maintain a consistent maintenance schedule.

With attention to these details, your 2016 Husqvarna TC85BW will deliver smooth, reliable power every ride.

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Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.